Sounds travel further in the cooler air 声音在冷空气中传的更远一些

104. Every layer seems to beat to a different tune.
     森林的每一层都有不同的曲调
105. In the early morning
     在清早
106. the forest's chorus is particularly rich.
     森林合唱团特别热闹
107. Sounds travel further in the cooler air
     声音在冷空气中传的更远一些
108. But few calls can penetrate as far through the dense vegetation as this one the deep bass solo of a male orangutan.
     有的叫声可以穿透密密的植被 例如这只,重低音独奏--雄红毛猩猩
109. In the middle of the day little stirs in the jungle and the hot dense air muffles the sound.
     时近中午,声音稀少, 雨林中湿热的空气也阻挡了声音的传送
110. As the afternoon wears on,
     午后,

来自《行星地球 第一季 第八集 Planet Earth S01E08 热带雨林》第 107 行